Fresenius Medical Care 2008K Troubleshooting Manual page 43

g) Pressure should fluctuate between a minimum and a maximum. The maximum depends on if the
machine is DiaSafe
IMPORTANT!
h) Call debug screen 0. Allow valve #43's dot to turn blue (see
Figure right). When it turns white again begin watching the gauge for one minute.
i) Does pressure consistently reach its maximum pressure per
Yes See procedure number
No See procedure number
F- 7.5.1 CHECK FLOW ERROR
a) Attach to fresh concentrate and return to Dialysis program (remember to press the 'CONFIRM' key).
b) Call debug screen 0. Watch Flow Error for four minutes or until if Flow Error = 1 (intermittent or
constant). Proceed accordingly (two scenarios):
1. Flow Error = 1: Read this procedure before performing it! Return to procedure number
(page 15) and BE CAREFUL. If you return here possibilities because of NO flow at all, possibilities:
1) Bad actuator board; 2) Stuck closed valves #32 and/or #34 and/or #36 and/or #38.
2. Flow Error = 0 (constant): The above procedures may have eliminated a restriction! Watch closely
for five additional minutes.
F- 7.6.0 TROUBLESHOOT VALVES #32 AND #36
a) CAREFULLY return valve #31 AND #38 to their distribution board positions.
b) CAREFULLY return the flow and deaeration pump to their distribution board positions.
c) Place the machine into Rinse program. After six minutes, and referring to
(black) solenoids of valves #32 and #36. NOTE! Valve #32 is normally warmer than valve #36. Are both
warm (energized)?
Yes Valve #32 and/or valve #36 not opening! Automated Valve Leak Tests will NOT help!
No NOTE that BOTH VALVES #32 AND #36 will be checked and proceed to page 78,
TROUBLESHOOTING
®
filter equipped.
F- 7.5.1
F- 9.0.1
Table O – Flow Pump Pressure
DiaSafe Filter?
Yes
No
VALVES.
Figure 20 – Balancing Chamber Valves
Fresenius 2008K Troubleshooting Guide
P/N 507298 Rev. B (Draft 1)
Section 1 – Flow Errors In Dialysis Program
Table O
(page 41).
(page 43).
Maximum Pressure
35 – 36 psi
29 – 30 psi
(page 41)?
Figure 20 (page 41), touch the
F- 1.0.3
Page 41